Question

chemistry semester 1 exam on level 25-26
possible points: 1.14
which type of chemical bond has the properties of having a very high melting point, an \electron sea\ structure, and being malleable, ductile, and lustrous?
molecular bonds
ionic bonds
covalent bonds
metallic bonds

Explanation:

To solve this, we analyze each bond type:

• Molecular bonds (covalent molecular) have low melting points, not high, and lack metallic properties.
• Ionic bonds form crystals, are brittle (not malleable/ductile), and don't have an electron sea.
• Covalent bonds (network covalent like diamond) are hard/brittle, not malleable/ductile.
• Metallic bonds involve metal atoms with delocalized electrons (electron sea), leading to high melting points, malleability, ductility, and luster.

Answer:

D. metallic bonds